Coverage-dependent changes in the electron–phonon coupling in Au/Mo(112)
| Autor: | Peter A. Dowben, Ning Wu, Keisuke Fukutani, Yaroslav B. Losovyj, N. Lozova, Ivan N. Yakovkin |
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| Rok vydání: | 2011 |
| Předmět: |
Coupling
Surface (mathematics) Radiation Condensed matter physics Scattering Chemistry Fermi level Electron phonon coupling Electron Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials symbols.namesake Impurity symbols Condensed Matter::Strongly Correlated Electrons Physical and Theoretical Chemistry Spectroscopy Surface states |
| Zdroj: | Journal of Electron Spectroscopy and Related Phenomena. 184:318-322 |
| ISSN: | 0368-2048 |
| DOI: | 10.1016/j.elspec.2010.12.011 |
| Popis: | We investigated the electron–phonon coupling (EPC), in the vicinity of the Fermi level, for the surface states of the Au-covered Mo(1 1 2) surface from high-resolution angle resolved photoemission data taken parallel to the surface corrugation (i.e. 〈 1 _ 1 _ 1 〉 ). The changes of the widths of the surface weighted bands, induced by Au layers, are discussed in terms of electron–electron interactions, electron impurity scattering and electron–phonon coupling. Gold overlayers suppress the mass enhancement of the Mo(1 1 2) surface band crossing the Fermi level at 0.54 A−1. The data indicate that significant contributions from impurity and defect scattering must be considered in any serious analysis of the imaginary part of the self energy and that there are interface effects that can have a profound influence on the imaginary part of the self energy. |
| Databáze: | OpenAIRE |
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